Contribution of W±Hminus-plusZi vertices to anomalous magnetic dipole and electric quadrupole moments of the W boson in the extra U(1) superstring-inspired model

W±Hminus-plusZi (i=1,2) vertices available exclusively in the extra U(1) superstring-inspired model have been utilized to evaluate the W-W-γ vertex contribution at the one loop level. The expressions so obtained have been used to estimate the anomalous magnetic dipole moment (ΔkWZiH) and electric quadrupole moment (ΔQWZiH) of the W+ boson. The contribution of the Z2WW vertex is also added to these values. The resulting values in the unit of (-α/π) when the Z2 mass varies from 555 to 620 GeV have the following ranges: for mt(CDF)=175.6GeV, Δk[U(1)], from 25.402 to 41.559, ΔQ[U(1)], from 6.886 to 10.858; for mt(D0)=169GeV, Δk[U(1)], from 20.821 to 34.121, ΔQ[U(1)], from 5.738 to 9.033. These are larger than the standard model radiative correction contributions but an order of magnitude smaller than those predicted by the composite model of Abbott and Farhi